Broom-banding plate.



O. M. IRVINE.

BRGOM BANDING PLATE.v

APPLIGATION FILED JULY 24, 1914.

Patented Jan. 19,

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BROOM-BANDLNG PLATn Specification of letters Patent. I Patented J an. 19, 191 5.

Application filed July 24, 1914. Serial No. 852,869.

' To all whom it may concern:

Be it known that I, OLLrr. M. IRVINE, a citizen of the United States, residing at Marshall, in the county of Saline and State of Missouri, have invented new and useful Improvements in Broom-Banding Plates, of

which the following is a specification.

provide a banding plate which is simple,

strong and durable of construction, and which admits of the applicationof the band ing wire and the release of the formed broom in a ready and convenient imanner, and

which is further easily applied to and removed from the jaws of a press and will not interfere with sewing of the broom straws in the usual manner.

The invention consists of the features of construction, combination and arrangement of parts herein fully described and claimed,

reference .being had to the: accompanying drawing in which i- Figure 1 is a front view of 'a banding plate-constructed in accordance with my invention. Fig. 2 is a vertical transverse section of the same. Fig. 3 is a bottom plan view of the banding plate. Figs. 4 and 5 are views showing the application of the invention,

In carrying my invention into practice I provide a bending plate 1, comprising a ody portion which is of proper length and width for the purpose, and is longitudinally curved on the arc of an ellipse to properly embr ce and shape one side of the broom head (r-be formed. In practice, a pair of 'pposed banding plates of the type speclfied is used, which plates are mounted for relative movement upon the jaws of the broom press for adjustment into and out of position to engage an inserted bundle of straw which is to be. formed into the broom head.

The platethas its body portion tapering between its longitudinal edges, as clearly shown in Fig. 2, and its thickened longitudinal front edge is provided wlth a groove 2- forming a seat recess to receive the wire banding loop. The groove 2 is so formed that its lower wall 3 lies in rear of the plane of its upper wall 4, for a purpose herein after described.

At its ends the longitudinally curved banding plate is provided with end pieces 5 projecting beyond the concaved lower face of the plate, saidrend pieces terminating in jecting inwardly at an oblique angle. thereto. The flanges slope from front to rear at an angle to provide wedging'jor binding surfaces 7. p

In the use of the banding plates, which are made in lefts and rights, thebanding plates are applied to the jaws 8 of abroom press 9, of. that type in which the jaws are vertically adjustabl to engage the broom head at desired elevations and are also movable toward and from each other to clamp and release the broom head. I'have not" deemed it necessary to illustrate or describe such a press in detail, as the pressitself constitutes no part of my invention. The jaws '8 have their bearing surfaces arranged to slope at an angle to properly bear'against the opposite sides of the broom head, and their upper faces are outwardl and downwardly inclined, and said jaws are provided with projecting end lugs 9. The banding plates are arranged to rest .against the upper inclined faces of the jaws withtheir grooved edges facing inwardly, the inclination of the plates being such that the walls.

3 and 40f the groove 2 of each banding plate liein the same vertical plane and parallel with the surface of the broom head.

The end pieces 5 of each banding plate pro;

'ject downwardly on the outer sides of the lngs 9, while the'retaining flanges 6 extend beneath said lugs and bind against the same to hold th banding plate in position. The banding p ateisslipped from a point inwardly of'the jaw over upon said jaw, so that the inclined or cam surfaces of the flanges 6 will bind against the insides of the lugs, thus firmly retaining the banding plate in position in such manner that the greater the pressure falling thereon the firmer the banding plate will be retained in position. 'This construction not only adapts the banding plate to be firmly held without the use of auxiliary fastenings, but also adapts the plate to be easily and conveniently applied and removed.

65 mwardly pro ecting ret aining flanges 6 pro- When the banding plates ,are arranged in position for operation and the jaws 8 are open the banding wire 10, in the form of an elliptical loop, and made from a piece of. wire whose ends are welded together, is disposed between the banding plates and fittedat its sides) in .the grooves thereof. The straw composing the broom head is then inserted downward through the wire loop until the portion to be embraced by the loop comes in proper position, after which the jaws are forced together to compress and clamp the binding loop in position, and the jaws then retracted to release the broom head for removal or for adjustment of the jaws to a different elevation to apply another banding loop at a difierent point. By the construction described one or more banding loops may be applied to the broom head in a ready and convenient manner,

while allowing the usual operation of sewing the broom straws together to be performed, the sewing being carried out at a point above the level of the banding plates, so that the latter will not interfere with this operation' The bandinglplates may be conveniently removed at any time for, the ,substitution of other banding plates or for: the use of ordinary sewing plates, without the necessity of adjusting", or removing any fastenings.

I claim r 1. A handing plate for broom making I machines comprising a body-having a lon- Copies of this patent maybe obtained for gitudinally' extending groove to receive a banding wire, one of the walls of said groove being depressed with relation to theother.

2. A banding plate for broom making machines comprising a longitudinally curved body tapered between its concave and convex edges, said plate being formed with a longitudinally extending groove, one of the side walls of said groove being depressed with relation to the other side wall thereof.

'3. A banding plate for broom making machines comprising a longitudinally curved body having right angular end pieces terminating in fianges'extending inwardlyat oblique angles, said body being provided with a longitudinally extending wire receiving groove, one of the side walls of said groove being depressed with relation to the other side wall thereof.

4. A banding plate for broom making machines comprising a plate body, having an edge portion provided with a groove to receive the banding wire, and-having means thereon for interlocking engagement with the aw of' a broom press without the use of l five cents each, by iaddi essing the Commissioner of Patents,

Washington, D. G. 

